To showcase the strength of their locks, a person shoots a bullet at one of Learn Lock's locks. It clears a 50 %-inch hole each of the way with the lock, and continue to, it stays latched, showcasing that the lock life up to the slogan, "tricky below hearth." https://www.amazon.com/Hole-Floor-James-Dewille/dp/B0CKPHF9K3